I have recently installed realMyst: Masterpiece edition on Steam and when I was turning down the resolution to 800 x 600 I miss-clicked and hit the 512 x 384 setting. Now I cannot turn the resolution back up while in game. I cannot find a .config file with the option to change resolution. Is there a file that does that or is there another way to change the resolution while out of the game?

*EDIT* I found the answer to my question. The config files are in the Appdata folder. What an idiot I am.